(1/8) A few thoughts on the current debate about the #EUTaxonomy on sustainable energy finance, especially the classification of #gaspower and #nuclear.
(2/8) #Nuclear power has a very peculiar risk profile. It certainly is climate-friendly, with small life-cycle CO2 emissions (like wind and PV). But its waste problem and nuclear accident risks are unique. Ultimately a value judgement whether or not these eco-risks are acceptable
(3/8) The true risk about #nuclear for climate change mitigation: Its track record of delays and cost overruns. New nuclear power makes for a very risky and costly bet for reaching climate targets. Just look at #Olkiluoto, #Flamanville, #HinkleyPoint. #FalsePromise?
(4/8) Too #costly: Electricity form new #nuclear is 2-5 times more expensive than wind or solar power. Plus, it is too inflexible and too capital-intensive to compete with gas / hydrogen as a mid-load or peak-load #backup in a power system dominated by variable renewable supply.
(5/8) Too #late: #NuclearPlants typically take >10years from initial planning to completion. However, Europe needs to achieve an at least 80% decarbonization of power supply already by 2030, so any new nuclear would come very late, if not too late.
(7/8) #GasPower: Nonetheless, will need a lot of new gas power capacity with rather low yearly electricity output as a backup for times of low wind and solar power generation. But that doesn’t make fossil gas any more sustainable.
(8/8) The #EUTaxonomy is right in insisting on a rapid transition from #gas to #hydrogen as a fuel for backup power generation. Developing a suitable #hydrogen production and transport infrastructure is a huge task in its own.
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We are in the midst of a huge technology revolution. In the 2010s, costs for solar PV have decreased by 85%, for wind power by 50% (@REN21 ), and batteries are repeating that pattern. Solar and wind are already the cheapest electricity option in most parts of the world.
However, electricity currently only accounts for 20% of global final energy, because it is the most costly energy carrier. The remaining 80% non-electric are mostly fossil-based. Transitioning non-electric fuels to low-carbon will take much longer than decarbonizing electricity.
We all grew up in a world where firms and consumers pay a lot more for one kWh of electricity than for any other energy carrier. Electricity is the most costly energy carrier, because it is produced by burning fossil fuels at substantial conversion losses.
Energy Revolution Ahead? Quite possible! Our new paper @NatureEnergyJnl explores the prospects of renewables-based electrification towards limiting warming at 1.5°C. nature.com/articles/s4156…
Thread on the key points.
We are in the midst of a huge technology revolution. In the 2010s, costs for solar PV have decreased by 85%, for wind power by 50% (@REN21), and batteries are repeating that pattern. Solar and wind are already the cheapest electricity option in most parts of the world.
However, electricity currently only accounts for 20% of global final energy, because it is the most costly energy carrier. The remaining 80% non-electric are mostly fossil-based. Transitioning non-electric fuels to low-carbon will take much longer than decarbonizing electricity.